The term "diner" usually evokes thoughts of breakfast at midnight and dense menus of Dickensian length. But at the Jackson Diner in the heart of Jackson Heights in Queens, crowds assemble for some of the city's best North Indian food. In the heart of the borough's "little India," a large and casual banquet room with deep purple paper placemats is the go-to spot for a reasonably-priced unlimited lunch buffet and Indian food hankerings of......